Like more than one of them
30 games close to two or more of Dead Maze, Left 4 Dead 2 and Garry's Mod
No More Room in Hell
Dead Maze, but free to play, and a first-person shooter
Loved · 90%Zombies · SurvivalAlso like Left 4 Dead 2 and Garry's Mod
Killing Floor 2
Much the same as Left 4 Dead 2
Liked · 88%Zombies · FPSAlso like Dead Maze and Garry's Mod
Unturned
Dead Maze, but free to play, and twice the hours
Loved · 91%Zombies · SurvivalAlso like Left 4 Dead 2 and Garry's Mod
Back 4 Blood
Left 4 Dead 2, but more divisive
Mixed · 69%Zombies · FPSAlso like Dead Maze and Garry's Mod
Killing Floor
Much the same as Left 4 Dead 2
Loved · 95%Zombies · FPSAlso like Dead Maze and Garry's Mod
Dead Island Definitive Edition
Dead Maze, but an action RPG, and first-person
Liked · 82%Zombies · SurvivalAlso like Left 4 Dead 2
Project Zomboid
Dead Maze, but three times the hours
Loved · 94%Zombies · SurvivalAlso like Left 4 Dead 2
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · PhysicsAlso like Dead Maze
No One Survived
Dead Maze, but a survival horror game
Divisive · 64%Zombies · SurvivalAlso like Left 4 Dead 2 and Garry's Mod
Survarium
Dead Maze, but free to play, and a first-person shooter
Divisive · 55%Survival · ZombiesAlso like Left 4 Dead 2 and Garry's Mod
Zombie Panic! Source
Left 4 Dead 2, but free to play, and half the hours
Liked · 85%Zombies · FPSAlso like Dead Maze and Garry's Mod
World War Z
Left 4 Dead 2, but more divisive
Liked · 82%Zombies · Online Co-OpAlso like Dead Maze and Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Dead Rising 3
Dead Maze, but a hack and slash game, and funny
Mixed · 77%Zombies · SurvivalAlso like Left 4 Dead 2 and Garry's Mod
Dying Light
Left 4 Dead 2, but open world, and with parkour
Loved · 95%Zombies · Survival HorrorAlso like Dead Maze
Call of Duty: World at War
Left 4 Dead 2, but set in World War II
Loved · 92%Zombies · FPSAlso like Dead Maze and Garry's Mod
Z1 Battle Royale
Dead Maze, but a battle royale, and three times the hours
Divisive · 56%Massively Multiplayer · SurvivalAlso like Left 4 Dead 2 and Garry's Mod
Deadside
Dead Maze, but a first-person shooter, and PvP
Mixed · 76%Survival · CraftingAlso like Garry's Mod and Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Dead Rising 2
Dead Maze, but a hack and slash game, and third-person
Mixed · 78%Zombies · SurvivalAlso like Left 4 Dead 2 and Garry's Mod
7 Days to Die
Dead Maze, but a base builder, and five times the hours
Liked · 87%Zombies · SurvivalAlso like Garry's Mod and Left 4 Dead 2
WARMODE
Dead Maze, but a tenth of the hours, and more divisive
Divisive · 62%Zombies · Massively MultiplayerAlso like Left 4 Dead 2 and Garry's Mod
Infestation: The New Beginning
Dead Maze, but PvP, and more divisive
Divisive · 42%Zombies · Massively MultiplayerAlso like Left 4 Dead 2
SurrounDead
Dead Maze, but single-player, and with base building
Loved · 91%Zombies · SurvivalAlso like Left 4 Dead 2
Cry of Fear
Left 4 Dead 2, but a psychological horror game, and a third of the hours
Liked · 89%Zombies · Survival HorrorAlso like Dead Maze
Infestation: The New Z
Dead Maze, but more divisive
Divisive · 54%Zombies · Massively MultiplayerAlso like Left 4 Dead 2
How this list is made
Each game is measured against each of your picks the way a games-like list measures it: the Steam community tags, Steam genres and IGDB themes they share, each counting for more the fewer games carry it. A game's place is how alike it is to your picks together, as a share of each pick's best match, so one alike to two of them comes before one alike to just one. It must be close to at least one of them, as close as it would have to be on that game's own list.
None of your picks is on the list, nor a second release of one, nor a game of their own series. Up to 30 games are shown. Under each name, the kinds it shares with the pick it is closest to, and how it differs from that pick.